Hi boys,
I am working on my pp class A amplifier. I am currently working on PSU of the Driver stage (my amp have only driver and power stages). The driver is formed as LTP using CCS in the cathodes. I found out that i need constant voltage supply for driver. Fluctuating voltage in the power supply network +-10% would greatly affect the operating point of the driver.
The picture shows the whole situation. In the red frame is the voltage "regulator" that I designed. Unfortunately, I am not a friend of simulation. What do you think, can it work well? Of course, I take into account that zener diodes are not very accurate and have a thermal coefficient, but that is nothing compared to the +-10% fluctuation of power networks. I also know about a large amount of zener diodes noise, but it should be cancelled in the differential pair of power stage. The driver differential pair has a constant current draw, so I don't have to worry about voltage regulation.
What do you think of my circuit? Would you change anything?
Thank you
Jan
I am working on my pp class A amplifier. I am currently working on PSU of the Driver stage (my amp have only driver and power stages). The driver is formed as LTP using CCS in the cathodes. I found out that i need constant voltage supply for driver. Fluctuating voltage in the power supply network +-10% would greatly affect the operating point of the driver.
The picture shows the whole situation. In the red frame is the voltage "regulator" that I designed. Unfortunately, I am not a friend of simulation. What do you think, can it work well? Of course, I take into account that zener diodes are not very accurate and have a thermal coefficient, but that is nothing compared to the +-10% fluctuation of power networks. I also know about a large amount of zener diodes noise, but it should be cancelled in the differential pair of power stage. The driver differential pair has a constant current draw, so I don't have to worry about voltage regulation.
What do you think of my circuit? Would you change anything?
Thank you
Jan
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